<template>
  <div class="account-box">
    <div class="toggle">
      <a @click="isMsgLogin = false" href="javascript:;" v-if="isMsgLogin">
        <i class="iconfont icon-user"></i> 使用账号登录
      </a>
      <a @click="isMsgLogin = true" href="javascript:;" v-else>
        <i class="iconfont icon-msg"></i> 使用短信登录
      </a>
    </div>
    <Form
      ref="target"
      class="form"
      :validation-schema="schema"
      v-slot="{ errors }"
      autocomplete="off"
    >
      <template v-if="!isMsgLogin">
        <!-- 用户名框 -->
        <div class="form-item">
          <div class="input">
            <i class="iconfont icon-user"></i>
            <Field
              :class="{ error: errors.account }"
              name="account"
              v-model="form.account"
              type="text"
              placeholder="请输入用户名"
            />
          </div>
          <div class="error" v-if="errors.account">
            <i class="iconfont icon-warning" />
            {{ errors.account }}
          </div>
        </div>

        <!-- 密码框 -->
        <div class="form-item">
          <div class="input">
            <i class="iconfont icon-lock"></i>
            <Field
              :class="{ error: errors.password }"
              name="password"
              v-model="form.password"
              type="password"
              placeholder="请输入密码"
            />
          </div>
          <div class="error" v-if="errors.password">
            <i class="iconfont icon-warning" />
            {{ errors.password }}
          </div>
        </div>
      </template>

      <template v-else>
        <!-- 手机号输入框 -->
        <div class="form-item">
          <div class="input">
            <i class="iconfont icon-user"></i>
            <Field
              :class="{ error: errors.mobile }"
              name="mobile"
              v-model="form.mobile"
              type="text"
              placeholder="请输入手机号"
            />
          </div>
          <div class="error" v-if="errors.mobile">
            <i class="iconfont icon-warning" />
            {{ errors.mobile }}
          </div>
        </div>

        <!-- 验证码框 -->
        <div class="form-item">
          <div class="input">
            <i class="iconfont icon-code"></i>
            <Field
              :class="{ error: errors.code }"
              name="code"
              v-model="form.code"
              type="text"
              placeholder="请输入验证码"
            />
            <span @click="send()" class="code">{{ timer <= 0 ? '发送验证码' : timer }}</span>
          </div>
          <div class="error" v-if="errors.code">
            <i class="iconfont icon-warning" />
            {{ errors.code }}
          </div>
        </div>
      </template>

      <div class="form-item">
        <div class="agree">
          <Field as="Checkbox" name="isAgree" v-model="form.isAgree" />
          <span>我已同意</span>
          <a href="javascript:;">《隐私条款》</a>
          <span>和</span>
          <a href="javascript:;">《服务条款》</a>
        </div>
        <div class="error" v-if="errors.isAgree">
          <i class="iconfont icon-warning" />
          {{ errors.isAgree }}
        </div>
      </div>
      <a href="javascript:;" class="btn" @click="login">登录</a>
    </Form>

    <div class="action">
      <!-- QQ登录主要是获取跳转链接 -->
      <a
        href="https://graph.qq.com/oauth2.0/authorize?client_id=100556005&response_type=token&scope=all&redirect_uri=http%3A%2F%2Fwww.corho.com%3A8080%2F%23%2Flogin%2Fcallback"
      >
        <img src="https://qzonestyle.gtimg.cn/qzone/vas/opensns/res/img/Connect_logo_7.png" alt />
      </a>
      <div class="url">
        <a href="javascript:;">忘记密码</a>
        <a href="javascript:;">免费注册</a>
      </div>
    </div>
  </div>
</template>

<script>
import { onUnmounted, reactive, ref, watch } from 'vue'
import veeSchema from "@/utils/vee-validate-schema"
import Message from '@/components/library/Message'
import { ErrorMessage, Form, Field } from 'vee-validate'
import { userAccountLogin, userMobileLoginMsg, userMobileLogin } from "@/api/user"
import { useRoute, useRouter } from 'vue-router'
import { useStore } from 'vuex'
import { useIntervalFn } from "@vueuse/core"

export default {
  name: 'LoginForm',
  setup() {
    const router = useRouter()
    const route = useRoute()
    const store = useStore()

    // 是否短信登录
    const isMsgLogin = ref(false)
    // 表单信息对象
    const form = reactive({
      isAgree: true,
      account: null,
      password: null,
      mobile: null,
      code: null
    })

    // 表单验证规则
    const MySchema = {
      account: veeSchema.account,
      password: veeSchema.password,
      mobile: veeSchema.mobile,
      code: veeSchema.code,
      isAgree: veeSchema.isAgree
    }

    // 切换表单元素，还原数据和清除校验效果
    const target = ref(null)
    watch(isMsgLogin, () => {
      // 切换表单还原数据
      form.isAgree = true
      form.account = null
      form.password = null
      form.mobile = null
      form.code = null
      // 补充校验效果清除，Form组件提供resetForm()
      target.value.resetForm()
    })


    /* =================== 短信验证码登录  =================== */
    const timer = ref(0)
    //pause 暂停 resume 重新开始 useIntervalFn(回调函数,执行间隔,是否立即开启)
    const { pause, resume } = useIntervalFn(() => {
      --timer.value
      if (timer.value <= 0) pause()
    }, 1000, false)
    // 发送验证码
    const send = async () => {
      //验证此信息返回验证结果信息
      const valid = MySchema.mobile(form.mobile)
      // 失败时,使用vee的错误函数显示错误信息 setFieldError(字段,错误信息)
      if (valid != true) return target.value.setFieldError('mobile', valid)
      // 没有倒计时才可以发送
      if (timer.value <= 0) {
        try {
          await userMobileLoginMsg(form.mobile)
          Message({ type: 'success', text: '发送成功' })
          // 设置执行时长
          timer.value = 60
          resume()
        } catch (e) {
          console.dir(e);
          Message({ type: 'error', text: '发送失败' })
        }
      }
    }


    /* ===================== 登录 ========================== */
    const login = async () => {
      // Form组件提供了一个 validate 函数作为整体表单校验，当是返回的是一个promise
      const valid = await target.value.validate()
      let data = null;
      if (!valid)
        return Message({ type: 'error', text: "表单信息不完整" })
      try {
        if (isMsgLogin.value) {
          // 短信登录
          data = await userMobileLogin(form)
        } else {
          // 手机号登录
          data = await userAccountLogin(form)
        }
      } catch (e) {
        console.dir('登录失败', e);
        if (e.response && e.response.data)
          return Message({ type: 'error', text: e.response.data.message })
        return Message({ type: 'error', text: '登录失败' })
      }

      // 解构出用户信息, 并存储用户信息
      const { id, account, nickname, avatar, token, mobile } = data.result
      store.commit('user/setUser', { id, account, nickname, avatar, token, mobile })
      // 合并本地购物车
      await store.dispatch('cart/mergeLocalCart')
      Message({ 'type': 'success', text: '登录成功' })
      router.push(route.query.redirectUrl || '/')
    }

    onUnmounted(() => {
      pause()
    })


    return {
      isMsgLogin,
      form,
      schema: MySchema,
      login,
      target,
      send,
      timer
    }

  },
  components: {
    Form,
    Field,
    ErrorMessage
  }
}
</script>


<style lang="less" scoped>
.account-box {
  .toggle {
    padding: 15px 40px;
    text-align: right;
    a {
      color: @xtxColor;
      i {
        font-size: 14px;
      }
    }
  }
  .form {
    padding: 0 40px;
    &-item {
      margin-bottom: 28px;
      .input {
        position: relative;
        height: 36px;
        > i {
          width: 34px;
          height: 34px;
          background: #cfcdcd;
          color: #fff;
          position: absolute;
          left: 1px;
          top: 1px;
          text-align: center;
          line-height: 34px;
          font-size: 18px;
        }
        input {
          padding-left: 44px;
          border: 1px solid #cfcdcd;
          height: 36px;
          line-height: 36px;
          width: 100%;
          &.error {
            border-color: @priceColor;
          }
          &.active,
          &:focus {
            border-color: @xtxColor;
          }
        }
        .code {
          position: absolute;
          right: 1px;
          top: 1px;
          text-align: center;
          line-height: 34px;
          font-size: 14px;
          background: #f5f5f5;
          color: #666;
          width: 90px;
          height: 34px;
          cursor: pointer;
        }
      }
      > .error {
        position: absolute;
        font-size: 12px;
        line-height: 28px;
        color: @priceColor;
        i {
          font-size: 14px;
          margin-right: 2px;
        }
      }
    }
    .agree {
      a {
        color: #069;
      }
    }
    .btn {
      display: block;
      width: 100%;
      height: 40px;
      color: #fff;
      text-align: center;
      line-height: 40px;
      background: @xtxColor;
      &.disabled {
        background: #cfcdcd;
      }
    }
  }

  .action {
    padding: 20px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    .url {
      a {
        color: #999;
        margin-left: 10px;
      }
    }
  }
}
</style>